was the carb a DP or vac sec? Just an old 750 type or the newer ones with adjustable throttle plates, etc like Quick Fuel, BG, etc ?
My 416 has a step down cam from yours (comp 274-solid). I have a BG Silver Claw DP. And we have to play the throttle plate stops and other stuff to tune it. I’ve got a tight converter and it will get an off idle stumble it not tuned right.
